Finding the Fourth Proportional to 257,625.36, 386,431.08 and 115,432.02
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Solution
The fourth proportional to 257,625.36, 386,431.08 and 115,432.02 is: 173,144.91
Step by Step Solution
- Step 1: Write the proportion equation
257,625.36 : 386,431.08 = 115,432.02 : x - Step 2: Convert to fraction form
257,625.36/386,431.08 = 115,432.02/x - Step 3: Cross multiply
257,625.36x = 386,431.08 × 115,432.02 - Step 4: Simplify right side
257,625.36x = 44,606,520,155.18 - Step 5: Solve for x
x = 44,606,520,155.18/257,625.36 - Step 6: Final answer
x = 173,144.91
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.